There are about 15,000 satellites orbiting the Earth[1]. Most of them, like the International Space Station[2] and the Hubble Telescope[3], reside in low Earth orbit, or LEO, which tops out at about 1,200 miles (2,000 kilometers) above the Earth’s surface.
But as more and more satellites are launched into LEO – SpaceX’s Starlink...
Read more https://theconversation.com/how-are-dark-matter-and-antimatter-different-270362
People often see science as a world apart: cool, rational and untouched by persuasion[1] or performance. In this view, scientists simply discover truth, and truth speaks for itself[2].
But history tells a different story. Scientific theories do not simply reveal themselves; they compete for attention, credibility and uptake. U.S. Supreme Court...
People typically think about evolution as a linear process where, within a species, the classic adage of “survival of the fittest” is constantly at play. New DNA mutations arise and get passed from parents to offspring. If any genetic changes prove to be beneficial, they might give those young a survival edge.
Over the great span of...